diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/llite/rw26.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/rw26.c | 35 |
1 files changed, 15 insertions, 20 deletions
diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c index 27e4e64bc1e7..96c29ad2fc8c 100644 --- a/drivers/staging/lustre/lustre/llite/rw26.c +++ b/drivers/staging/lustre/lustre/llite/rw26.c @@ -51,9 +51,6 @@ #include <linux/buffer_head.h> #include <linux/mpage.h> #include <linux/writeback.h> -#include <linux/stat.h> -#include <asm/uaccess.h> -#include <linux/mm.h> #include <linux/pagemap.h> #define DEBUG_SUBSYSTEM S_LLITE @@ -72,7 +69,8 @@ * aligned truncate). Lustre leaves partially truncated page in the cache, * relying on struct inode::i_size to limit further accesses. */ -static void ll_invalidatepage(struct page *vmpage, unsigned long offset) +static void ll_invalidatepage(struct page *vmpage, unsigned int offset, + unsigned int length) { struct inode *inode; struct lu_env *env; @@ -89,7 +87,7 @@ static void ll_invalidatepage(struct page *vmpage, unsigned long offset) * below because they are run with page locked and all our io is * happening with locked page too */ - if (offset == 0) { + if (offset == 0 && length == PAGE_CACHE_SIZE) { env = cl_env_get(&refcheck); if (!IS_ERR(env)) { inode = vmpage->mapping->host; @@ -182,7 +180,7 @@ static int ll_set_page_dirty(struct page *vmpage) */ vvp_write_pending(obj, cpg); #endif - RETURN(__set_page_dirty_nobuffers(vmpage)); + return __set_page_dirty_nobuffers(vmpage); } #define MAX_DIRECTIO_SIZE 2*1024*1024*1024UL @@ -249,7 +247,6 @@ ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io, long page_size = cl_page_size(obj); bool do_io; int io_pages = 0; - ENTRY; queue = &io->ci_queue; cl_2queue_init(queue); @@ -286,11 +283,11 @@ ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io, src_page = (rw == WRITE) ? pages[i] : vmpage; dst_page = (rw == WRITE) ? vmpage : pages[i]; - src = ll_kmap_atomic(src_page, KM_USER0); - dst = ll_kmap_atomic(dst_page, KM_USER1); + src = kmap_atomic(src_page); + dst = kmap_atomic(dst_page); memcpy(dst, src, min(page_size, size)); - ll_kunmap_atomic(dst, KM_USER1); - ll_kunmap_atomic(src, KM_USER0); + kunmap_atomic(dst); + kunmap_atomic(src); /* make sure page will be added to the transfer by * cl_io_submit()->...->vvp_page_prep_write(). */ @@ -335,7 +332,7 @@ ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io, cl_2queue_discard(env, io, queue); cl_2queue_disown(env, io, queue); cl_2queue_fini(env, queue); - RETURN(rc); + return rc; } EXPORT_SYMBOL(ll_direct_rw_pages); @@ -383,14 +380,13 @@ static ssize_t ll_direct_IO_26(int rw, struct kiocb *iocb, unsigned long seg = 0; long size = MAX_DIO_SIZE; int refcheck; - ENTRY; if (!lli->lli_has_smd) - RETURN(-EBADF); + return -EBADF; /* FIXME: io smaller than PAGE_SIZE is broken on ia64 ??? */ if ((file_offset & ~CFS_PAGE_MASK) || (count & ~CFS_PAGE_MASK)) - RETURN(-EINVAL); + return -EINVAL; CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), size=%lu (max %lu), " "offset=%lld=%llx, pages %lu (max %lu)\n", @@ -402,7 +398,7 @@ static ssize_t ll_direct_IO_26(int rw, struct kiocb *iocb, for (seg = 0; seg < nr_segs; seg++) { if (((unsigned long)iov[seg].iov_base & ~CFS_PAGE_MASK) || (iov[seg].iov_len & ~CFS_PAGE_MASK)) - RETURN(-EINVAL); + return -EINVAL; } env = cl_env_get(&refcheck); @@ -495,7 +491,7 @@ out: } cl_env_put(env, &refcheck); - RETURN(tot_bytes ? : result); + return tot_bytes ? : result; } static int ll_write_begin(struct file *file, struct address_space *mapping, @@ -506,11 +502,10 @@ static int ll_write_begin(struct file *file, struct address_space *mapping, struct page *page; int rc; unsigned from = pos & (PAGE_CACHE_SIZE - 1); - ENTRY; page = grab_cache_page_write_begin(mapping, index, flags); if (!page) - RETURN(-ENOMEM); + return -ENOMEM; *pagep = page; @@ -519,7 +514,7 @@ static int ll_write_begin(struct file *file, struct address_space *mapping, unlock_page(page); page_cache_release(page); } - RETURN(rc); + return rc; } static int ll_write_end(struct file *file, struct address_space *mapping, |